1. Enlarged Thyroid (Goiter)
Your brain releases thyroid-stimulating hormone (TSH) to control thyroid activity. If your thyroid struggles, TSH levels rise, causing the gland to enlarge. This can lead to visible swelling at the base of your neck and, in severe cases, difficulty swallowing or breathing.
2. Dry, Rough, or Cracked Skin
Low thyroid hormone reduces natural oil production in your skin, leading to dryness, roughness, and even a cracked, mosaic-like appearance.
3. Thickened Skin on Hands and Feet
Slower skin cell turnover causes buildup of dead skin and keratin, leading to thickened skin—especially on the palms and soles.
4. Hair Loss and Thinning
Hair growth slows and follicles enter a resting phase too early, causing thinning, brittleness, and increased shedding.
5. Brittle or Thick Nails
Nails may become thick yet fragile, with ridges, splitting, or even separation from the nail bed (onycholysis).
6. Thinning Outer Eyebrows
Loss of hair on the outer third of the eyebrows is a classic sign often noticed by doctors.
7. Puffy Face and Under-Eye Swelling
This isn’t just fluid retention—it’s caused by a buildup of a substance called myxedema, leading to persistent puffiness.
8. Swollen Tongue
Myxedema can also affect muscles, causing the tongue to enlarge and potentially contribute to sleep apnea.
9. Numbness and Tingling (Carpal Tunnel Syndrome)
Fluid buildup can compress nerves in the wrist, leading to numbness, tingling, or pain in the hands.
10. Sensitivity to Cold
A slower metabolism means less heat production, making you feel unusually cold even in warm environments.
11. Yellow-Orange Skin (Carotenemia)
Poor conversion of beta-carotene into vitamin A can cause a yellowish tint, especially on palms and soles.
12. Depression and Brain Fog
Low thyroid hormone can affect brain function, leading to mood changes, memory issues, and reduced motivation.
13. Heavy or Irregular Periods
Hormonal imbalance can disrupt menstrual cycles, often causing heavier or irregular periods.
14. Chronic Fatigue
This goes beyond normal tiredness—it’s a deep exhaustion that doesn’t improve with rest.
15. Weight Gain and Constipation
A slower metabolism can lead to weight gain and reduced digestive activity, causing constipation.
What to Do Next
If several of these symptoms sound familiar, consult a doctor. Diagnosis is simple—a blood test measuring TSH levels. High TSH usually indicates an underactive thyroid.
The good news: hypothyroidism is highly treatable. The standard treatment is levothyroxine, a daily hormone replacement medication. With proper care, many symptoms can improve significantly—or even disappear—helping you feel like yourself again.
